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题目小明通过实验验证力的平行四边形定则:(1)实验记录纸如图1所示,O点为橡皮筋被拉伸后伸长到的位置,两弹簧测力计共同作用时,拉力F_1和F_2的方向分别过P_1和P_2点;一个弹簧测力计拉橡皮筋时,拉力F_3的方向过P_3点。三个力的大小分别为:F_1=3.30 N、F_2=3.85 N和F_3=4.25 N。请根据图中给出的标度作图求出F_1和F_2的合力。
Subject Xiao Ming through experimental verification of the parallelogram of the rules: (1) experimental recording paper shown in Figure 1, O point is stretching the rubber band stretched to the position of the two spring force gauge together, the tension F_1 And F_2 respectively pass P_1 and P_2; when a spring force gauge pulls the rubber band, the direction of the pulling force F_3 passes P_3. The three forces are respectively F_1 = 3.30 N, F_2 = 3.85 N and F_3 = 4.25 N. Please find the resultant force of F_1 and F_2 according to the scale given in the figure.